Pneumatic filter.



PTENTED MAY lK 1906,.

E. G, SHORT?.

ILPPLICATON IILILP DEC. C0, MO5.

PATENTED MAY l, 1906.

NoI 819,179.

E. G. SHRTT. PNBUMATIC FILTER. APPLICATION TILBD DBO. 2o. 1905.

4 SHEETS-SHEET 2.

wi @www DATENTED MAY l, 1906.

FILTER.

QV/MOC E. G. SHURTT. PNBUMATIC FILTER.

APPLICATION' FILED DEC. 20. 1905.

Fumar r mmummmlif athena,

PATBNTED MAY l, 1906.

lliil Ninn YORK Llin RATUN OF NEW EUR? i URK.

NEW YORK, ASSIGNOR F UNE-HALF COMPANY, UF (,Al'lllAhlL NEW YORK, A

C FlLTEF.

To whom, 'it 'nz/Q3; corto/irri:

Be. it. known that i, citizen of the hinted Stutes, residing at Cartriage, in the county oi Jeii'erson and State ol' l New York, haveinvente eertain new and useful lnmrorenients in Pneumatic Filtersand dohereby deolare the following to he a full, clear, and exact descriptionof the invention, such as will enable others sinlled .in theI io art towhich it appertains to inake and use f. the saine., reference han g hadto the aseoiupartying' drawings, and to the atterri oi refer-- enceriniriod. thereon, which i. rin :i part oi" this specication.

This invention relaties to new and useful improven'ients in i'inrnnatic.lter-presses esecially adapted for use in the manufaeturo of hydrutedlune in which it is necessary m order to roduee a satisfactory productto zo thoronglny slaize every niinute particle of the ilS linie, and toace-on the caleinod lime-rool mixed maire saturatii'i i linle is r'Aiii. f fi z5 atterri i hir-.acl uir ture anjfparielea which :nigl thelima-Water unalalrod.

To accomplish the purpose of getting rid of 5o the exhess of 'waterwhich has heen added to the linie for the pnrposo of slaliing is the ohject of the presont invention; and it eonsists of a rotaryrislrrinrharing pockets anout its c-ircuuference adapted to receive tho linux-Water as the carrier rotates in a tunis and in the pro-vision of nieuns.i'herelry each porltci muy he thrown into comuunication with avacuum-,Chamber durixur a certain interval in I the rotary movementofthe carrier7 whereh)r nlish uunsture and hot 1moisa large percentageol the moisture ol" the lime Sperl ation of Final-inn G. non'rr, a i

aen?. witter to r vau" drier, tous l i it pass through Letters ntent..tatenteu may 1, 1906.

! i'el'erenre marked thereon, forni a part of the present application,and in which Figi-iro 1 is a perspective viow of in); in1- provedpneumatic litter-press. Fig. 2 is a i transverse vertical sectionthrough the rotar)Y carrier and the tank in which said carrier roitaies. Fig. 3 is an enlurffed View, in side olo- Vation, of the carrier.l* ig. 4 is a detail View f showing the arrangmnent of the ports wheretby the various pockets about the rotary cari rier may he thrown intocommunication with l a vacuum und with air-pressure ducts. Fig. I 5 is ndetail View of ont` of the sections applied i to the circumference ofthe carrier for the pur )oso of holding screen-cloths over the lpoelrots, said View showingin top )lan View i one of tho buckets whichdips the inie solution und causes the salue to lill the pocket as i thecarrier rotates. Fig, 5 is an end View ol` f the detail shown in Fig. 5`Fig. l is a top plan View of one ol' the perforated plates x which arepositioned in the various pockets l ahoul lhe circuiul'erenre ol the.carrier. Fig. l 7 is an edge view through one ol' said plates, u portionof said plate heilig shown in section to illustrate the corrugatedsurface thereof. Fig. N is u side elevation ol` u slight inodilicuj tionoi' my invention in which l )rovidc :1 stuiionury :nouns lor retainingthe iurel solulion in the pockets until each pocket of the uurrier risesto a horizontal position, ut which iuoxuent communicalion is hud betweenSuid pocket and the vaciunuchaulher. Fig. l) is a sectional View througha hollow shalt adapted to he held to u shell through whichromnuiuieation is had with the recessed huh ol the carrier. Fig. El is alace View ol' the llungcd end of said hollow shalt, und Fig` l() is anenlarged detail section through oiuI ol the pockets of the carrier andthrough the corrugated plato and canvas strainer held thereovor.

Reference now being luid to tho details ol' the drawings hy letter, Adesignates a tank` lOO . leavingva slight space between the edges gsierra being rectangular in outline and of slight depth, each pockethaving an opening D in the center thereof and each pocket having thebottom thereof slightly inclined toward said outlet-opening D, andthrough which opening the excessive moisture is withdrawn from thepocket in a manner presently to be described. An open ended passage E isfixed in each aperture D', and the inner end of each passagecommunicates with e. radial passage-Way E', formed in the hub en whichis mounted upon'a reduced portion fil the hub B2 of said carrier. i

G designates a erforated plate having corrugations u on t ie uppersurface thereof, as

shown clear y in Figs. 6 and 7 of the drawings,4

and said `plate is provided with leet g, and upon its edges projectlugsg. Said plate is made substantial-ly the shape of each pocket and ofsomewhat smaller area than the pocket,

thereor and the marginal edge of each pocket to allow the excess ofwater to be'withdrawn from the pocket. The 'object of said feet upon theplate is for the purpose of raisinT the plate a short distance from thebottom or the pocket in order to further facilitate the Withdrawal ofthe 'water held in the lime solution. vof the construction shown anddescribed, and each plate is held in position within the pocket by meansof countersuiiken screwsH.

l designates a screen-cloth, therebeing one .foreach of said pockets,and each screen is placed over the marginal edges about each pocket andis securely held over the pocket and plate positioned within the latterby means of the angled clamps K, detail views of whichare illustrated inFigs. 5 and 5a ol4 the drawings. 'Upon examination of said`liguresitwill be noted that each of said clamps is provided with arecessed lug K opposite the ends of the'cross-piece K2 of the clamp andprovided for the purpose ol receiving the threaded end of an angle-boltJ, the angle of each bolt entering an aperture in the side rim J of tuerotary carrier, and said bolts are held in the .position shown by meansorn nuts J2, which are tted upon the threaded ends thereof and bearagainst the outer faces or said lugs.

In the construction shown in Figs. l and 3 of the drawings will be seena series o .buckets N, which are made integral one With each clamp K andextending between and connected to the parallel ends-ol each clamp. Eachbucket has a closed end N, which extends substantially the length of oneof the angled end pieces of each clamp, and the marginal edge of each.end is-tapered, as shown clearly inthe drawings, and provided to assistin holding the lime solution in the bucket and allowing the same to flowfreely -into the pocketswithout running over the ends thereof as thecarrier-brings-in succes;

Each pocket is provided with a plate sion the various pockets. tohorizontal positions illed with the lime solution.

Referring to 2 and 4. of the draw-ings Will be seeii a chest M, which iscylindrical out lined and has two ports therein,`(designated, 7orespectively, by letters O and 0'.) Q designates a flexible pipe whichis adapted to afford means of communication between a vacuum-chamber(not shown) and the port O, and P designates a flexible 1pipe commu- 75nicating between aA pressure-c amber (not shown) and the port O at acertain interval during the rotary movement of thecarrier,

whereby as one or another of the Irecesses E', after having beencutof'from communica-8o tion with the-port O and the vacuumcharober', willcome in registrationwith the port O, thus allowing air under pressure toact upon the cake-of semiplastic material Whichhasbeenformed in eachpocket by the withdrawal of a large percentage of the mois-- ture fromthe material during the time that the pocket' is .in communication withthe vacuum through' the passage E, port O', and pipe Q( In order toholdthe adjacent faces -9o of the hub F and the chest M in contactwitheach other, l provide a tubularshank portion M, one end 'of which ,is`fastened to the chest M, and its other end is chambered, asat m, toreceive a spring S, which bears between4 95 the inner endet' saidchambered portion mand the box L. Said shank portionis slotted,

as at S', adapted to fitv over a lug S2 upon said box L. The inner endof said shank ortion M has a liange M2 withv op ositely-dis osed 1ccurved slots R', through wliich' the bo ts R, Twhich are fixed t'o thechest M, pass, and nuts M3 are fitted to the threaded ends of saidbolts, thus affording means whereby the chest M may be adjusted 'tobring the ports :o5 0 and 0 into their proper positions in order toallow the different passage-ways E toube brought into communicationeither With the vacuum-chamber or with the air-pressure s chamber atthe'proper time to effect the re-` i 1o sult sought.

Referring to Fi seen a slight modgiic'ation in mfp-apparatus in which ilprovide a semicylindrica "shoe or guide member T, which is mounted tohave a I 15 horizontal movement u on the frame of the tank, and by meanso a set-screw T said' member may be moved horizontally toad# just theposition thereof adjacent tothe ro-. tary carrier. The flanges upon saidmember'l 12o are provided with slots thr'ou hwhich bolts W ass, ther ebyaffording ui ing means for sai` member as it is move toward` or -away ffrom the rotary carrier. In said modification the buckets N (shown inFigs; 1 and 3`of x25 the drawings) are dispensed-With and the' marginaledges of the Icross-pieces" K2l are tary movement of 'the carrieriiilthaQtQf-lf P30.

.s of un drawings waits ..1

, ositioned in nach of said Dockets and i i simi/9 taining linz solutionin the Vfurious igocliifs abou tire circumference thereof. By reluenceto Fior. 3 it will be noted. that the lower end oi sai member T extendsdown into 'Clie tank, wiiinli is .adapted to contain he solution7 and isthe carrier rotates toward tiro, lonwr and oi smid nieniloor said memberserves lo retain the soluiion in the vocalists until tho pockets thusfilled zissunio in succession iiori- Zontiil positions, :it wliicliliniey oonnnunioiition is opened wiili the` i'iiifuuiincininilicr toWitlfT nw ii largo porcontiigv of tiro r-Xcess of' nioisur@ from Limsolution, .'liicli will loiiv the rrsidrw in the simpa oi u milio ofscniiplastic material.

The opcrstion of my apparatus is wry siniple and will be readilyundirsiood when considered in connection with the foregoing iind with`5h@ mscoinpanying drawings und isos follows: A periora ted vndcorfugsted plato is screen-cloth 'ilgiid @zich poulie@ und limsi inplace by moans of the buciet-cnrrying clamps. 'l'lie carrier is mail@ toroizitfi, and each buolie fis it. dips down in the solution will mise iisullluisnt qiiiintiify ol' ilu, hitter to fill a pocket, it liningfdvsigiiid io have @zich buckety hold just enough ol said solution Lofill a pocket. As tho carrier rotates willi the vmious bucliits, raisingmieli si supply of tho solution, ii 'pocliol will liv iilluitl from nachbuckety iis ouali of iiliiy lutter iissiiinos ii liori zontzll posilion,ilux solulion running ont oy griivi'iji niion lie serv-vn and into iliinoclw. s lli@ por! in tliil L-liisi` ll, willich fiiininiuni culos willillio i'iiuuiiiii, vonnis iu iogisii':A Aion willi onu or moro oi ilusi'iiissiigo-wii-is Vlll in the liuli of llin ciiiiiiij, wliiCli wouldtiilw plow iii'iii' tlii poi-,kots oil ilux ciiirier :iro risu nig fromiiliv siiil'aici olI ilif solution in lio t-iinli lo lioi'izconiilinisiiions, lio oliiii of iliu Yziciiiiin will iiil @xr-rind upon tliiioniinls oly liu iioiliiisi'liiiingii iiiiiiiiil i'oiii'y nioionion'i.of lilii cni'i'io'r, i \'.lr:iifiing ilio ixitiss oi' nioisiure` ironiilul solution, und iiiioi fini illvd poolw@ niissis iis lioiizaontiilnosiiioii roiziniiz nii'iiiion willi Lio viiiiiiini is vut oil', unddlr-r wurd lilii coniiiiiiniczilioii is oiiiiuzl ioiwion lili@ypzissngwwiivy liliiis siiiil oil l'i'oni iii@ init-- uiiiii und ilu`]ii'issii1'ivliiiinlwi, iliiis nll'orfling` niiniis for loosiliing iluli-,iilii from tlm svi-oon ovvi' ilu` poilwi, und iiny suiliililoiiiiiins nin)Y lio pi'ovidiil loi' rouoiving Llio i'iiliis ol'svniipliisiic nuiiviizil iis lilivy :iio loosonvd l'ioni llu ifiiiiviisor scrions.

Wlivii` tlii` loini ol' anim 'iiliiis illiisli'iiivd in Fig, n isutilized. llu ooiiiilion is sulisiiin liiilli llii siinio iis in lili@oiliii Yorin. imm-.piingy liliiil llio iiniivx solulion is luild in lliipouliois by nioains ol llii coiiiiivoil C i'liiiili'iciil niinilioi''l`, lilius insiiriiir inizins wliciiliy iii@ liiiivI solution will noi`slop over {lio-edges of Lliv poifkits wliili lining izoniovi'od.

liii'l'iiro of liyilrsi'iwl limi, it will lio iniiilr-i stood limi l don i moulins ilu? nonni .1i lus loi' any spnoisi use, as oliviinisly iiymuy no iii plied in treating furious solutions.

i'iiiving thus iii ll)r described niy invoniion, wlmi l Ciiiiin n unddesire to secure by .liiiiiirs ljiiioni, isrw i. A. lon-siiniiilii`lilir'iirass voniiirisingI ii, rotiiiycairiior liiiving ii serios ofiouliiiis iilioiil. its circiini'foriinci, :i tank in wl'iuli siiiilpocl- @is dip, ii Conciii'od sliiclii extending o'i'ffi zi poiion olsaid cnrriir und iidziptod lo raisin the ninterifil within the pocketsduring ii um tial rotary nioviiineni oi t-lie Currier and moans forsubjecting lli@ conionis of @sich pock- *Lo the action of ii vacuum undalso to the action of air rinde-r prossimi nl' dill'niininionienisduring ilio rotary niowinanl ol' ilu curi-ier, as set forth.

2. pneumatic lilsnpriss r-on'ipi" I rotin-jy Currier having n serios ol'poi-lavis iilioui iis oircuiiiieroiico, ii mili in wlnifli sziiilporlaeis; flip, :i coniriiiod sliiilil extending owl' :i portion 0f sindcarrier und iidiipiifil lo iolaiin lli@niateriiilwilliin siiidiiocliitsdui'ing .si par iul roliny inov -=niiil of said c=i11l0r,0.ioliol' said pocliclslniving un opening in tli'i bottoni thereof, ni'ncossed liuli to Suid cari-ier, passages communicating lniwoon siiidi'iponings und rwvsscs, und inoiins for bringing oiicli of said roiossosnilo oo:ninuniciitiion willi :i in iiuniunil willi :in :iir-piiissui'odiii ai different .l inuiiiniii': iil'ii-i roiiiiiiisiiig ziiloiziiii-ziri'inr lini'infg ii soi csof )on ils i-ii'i'iinilii'inf'o,ai inni; in wlncli said pooliols iiiii, ii i-oiii'iivod sliioiiloxliionding over :i noi'iion ol` iid curi-ivi' and ndiiilid io retainilii niiiloi'iiil will in siii-d poi-kots diiiingii )im liiii roiiii'yinoi'ifiiiunl ol siiid Qiirrioi, olii-ii of siiid noilwts im vinylv iinopening in tiny liol'oni liiiiioi, :i i'iwssod liiili lo siiid uurriir,inssiigis i oiiiiiiiiniciiiing lioiiwocii smid opvinngs :ind i'iliissis,und iiiljiisiiilili nir-anis For bring` ing mii-li ol' siiid rei-us: n:iiiio voininiiniifziiion 'willi ii i'ziviiiini und umili :innir-iii'ossiii'c duct iii, dill'irin'i iiiiiii'i'iils during llioioliini4 more iiioiil` ol' llif iiii'ioix iis soi l'oi'iili.

A iiniiiiiiiiiiii liltinnrinss Comprising' n rotzii'y i-zii'iiii havingn sni'lisol' iiocliits iilioiily its vii'cunil'vi'iiirv, ii trink inwliii-li saiid noi-liiils digi, -ti vonvaiwd sliiild oxioiidiiig ovvi' igioition o" siiid viii'iiii :ind iidiiiilid to iotiziin iiiiiiinitiiiiilwitliiiisiiid noilwisduringr ii piu'- liiil ioiiirynioviiniiil ol' sziid iiiri'ii-i', oiuli o1" sziiil pox'koi's liiii'iiig:in :winning iii llu lioiioni iliiriol', ii rvcfossid liiil.- lo smi(i'iiii'iir, opoif ond-id iiiisszigis conininiiicul ing liotiwivn ciiclinocliil :ind zi rim-oss ol` sind liiili, ii siiiiioniiii` ClinsLliiii'ing ilioi'ls oiwning iiliroiigli lilo laico lnrool, iidiipt'od tocoiinnuniciiuwilli siiid iiccsses, onix oi' siiiil ports ziiliiptcd toconi` niunicmo willi lli@ viicuuin and lili@ other boing especiallyiidiipivd for us in the n'iiiuuwith ii'pressnro-clniinber, us sei forth.

5. A pneumatic filter-press comprising a rotarycarrier having aseriesol' pockets about its circumference, a tank in which said pocklets dip, a concaved shield extending over a.,

portion of said carrier and adapted to retain the material within saidpockets during a partial rotary movement of said carrier, each ofsaidpockets having an opening in the bottoni thereof, a recessed hub to saidcarrier, openended passages cominunicatinfy between each ocket and arecess of said hu i, a stationary chest held yieldingly avainst therecessed face of said hub and provided with ports opening through theface thereof, adapted to communicate with said recesses, one of saidports adapted to communicate 'with the vacuum and the other with apressure-chariiber, as set forth. I

6. A pneumatic filter-press comprising aV rotary carrier having a seriesof pockets about its circumference, va tank in which said pockets dip, aco'ncaved shield extending over a portion of said carrier and adapted toretain the material within said ockets during a partial rotary movementoiP said carrier each of said pockets having an openin in the bottom'thereof, a recessed hub to sai carrier, openended passages communicatinbetween each pocket and a recess ofsaid hu a stationary chest heldyieldingly a ainst the recessed face of said hub and provi ed with portsopening through the face thereof, adapted to communica'tewith saidrecesses, one of said ports adapted' to communicate with the vacuum andthe other with a pressure-chamber, and means for adjusting said chestwith reference to the recessed hub., as set forth.

7. .A pneumatic Afilter-press comprising a l rotary carrier having aseries of pockets about its circumference, a rtank in which said pocketsdip, a concaved shield extending over a portion of said carrier andadapted to retain the material Within said ockets durin a artial rotarymovement o vsaid carrier t e ott A rn of each pocket having an openingtherea hub to said carrier having" recesses .formed therein, passagescommunicating between said recesses and the openings in said ockets, astationary chest havin ports opening through the face thereof an adaptedto 'fregister with the recesses in said hub, where-- by communicationmay be had between each recess and a vacuum, and a pressure-cylinder atdifferent moments during the rotary movement of the carrier, and ahollow i yielding sleeve adjustably secured to said'c est, as

set forth.

8. A pneumatic iilter-press comprising a rotarycarrier having a seriesof pockets about its circumference', means for automatically lling saidpockets as the carrier rotates, the bottom of each pocket having anopening therein, a hub to said carrier having recesses formed therein,passages communicating between aaid recesses and the openings in saidlpockets, a statiimarv chest having ports opening through the hicethereof and adupted to register with the recesses in said hub, wherebycommunication may be had between each recess and a vacuum, and a preslsure-cylinder at different moments during i the rotary movement of thecarrier, and a ,hollow yielding shaft, one end of which has-a flangewith elongated slots therein, bolts secured to said chest and assingthrough said slots, and nuts upon sai( bolts, as set ibrth.

'9. A .pneumatic vfilter-press comprising a rotary carrier having aseries of pockets about ,its circumference, means for automaticallydfilling said iockets as the carrier rotates, eac i of said poc etshaving an openin in the bot tom thereof, a shaft on which t ie carrieris mounted, the hub of said carrier having series of recesses formedtherein, openended passages, each communicating between an opening iiithe pocket and 'one of said recesses, a stationary chest having portsopening ister with said recesses whereby each recess may be thrown intocommunication with the .vacuum and with an air-pressure chamber atdifferent moments during the rotary movement of the carrier, a hollowshaft fixed at one end to said chest, its other end being recessed, a sring seated in said recess and adapted to liold the chest tightl againstthe recessed face of said hub, as set orth.

10. A pneumatic filter-press comprising a rotary carrier having aseriesof pockets about its circumference, means for automatically iilling saidpockets as the carrier rotates, and means for subjecting the contents ofeach pocket to the `action of a vacuum and also to the action of airunder pressure at different carrier, a corrugated plate positioned ineach pocket, means for holding the plates in the pockets, a strainerover each pocket, and means for holding the strainers upon the carrier,as set forth.

11. A pneumatic filter-press comprising a rotary carrier having a'seriesof pockets about its circumference, means for automatically filling saidpockets as the carrier rotates, and means for subjecting the contents ofcach pocket to the action of a vacuum and also to the actionV of airunder pressure at dii'i'ercnt moments during the rotarymovement of the.carrier, a corrugated plate positioned in each pocket, means for holdingthe plates in the pockets, a strainer over eachl ocket, a series ofplates,and means for hol ing said plates upon the carrier, as sot`forth.

12. A pneumatic filter-press comprising a rotary carrier having a seriesoi pockets about its circumference, a bucket positioned adjacent to eachpocket and affording means to fill thelatter as the carrier rotates, andmeans for subjecting the contents of each ocket to the action of avacuum and also to t e actionJ through the face thereof and adapted toreg- IOO fio5 v IIC oi air under pressure at different moments duringthe rotary movement ofthe Currier, as set iorth.

i3. A pnennm le {liter-press comprising a rot-eng)Y carrier havin; aseries oi pockets about ita vireninference, meanh.` lor automaticallylilling said porliets as the carrier rotates, and means lor subjecting'the eontentb` of each pool-:et to the notion oi n vaenuzn and also tothe aetion oi' nir under pressure atiliferent nnimentduring the rotnrxvmovement of the eznrier, n corrugated plate positioned in each pocket,meanv lor holding the plates in the poeltets, a strainer over eaelipooliet. a series of pliite :ind mean` lor lnildinpr said plates uponthe carrier, and a luieket enrried hy eaeh pln'e. as set forth.

.t pneumutie lter-press eomprisingz a rotnrj.' eiirrier ha Vin;r aseries of poeliets about itA i'ireuinference. meamfor automaticallylilliug #aid poelqetsv ns the carrier rotates, und mmm` for subjectingthe eontents of ezieh pot-liet to the aetion of ii vaeuum and also tothe aetion ol' air under pressure at different moment` during the rotarymovement ofthe earrier. n eorrugateil plate positioned in eaohpoel-tel', means for holding the platee` in the pockets, a strainer overeaeh pocket, means for holding the A trniner upon the Carrier, enenolamp haring Slotted luga projecting from the ernia tnereol', und nuanrsengaging sind logis ior holdinlgtlie elainp y upon the eariieiy. in: Hetl'oilh.

i5. pneumatic Miter-presa comprising a rotinyoarrier havingY e. seriesoi poeliets about in ciroumleienee. mea-na ior automatieally iillineYmud pockets as the carrier rotate-s, and menno for subjecting thecontents of each poeh-ei to the act-ion of a vacuum and also to theaction oi air under pressnreat diferent moments during.; the rotarymovement of the carrier, a. corrugated plata 1 oooltet, niet .s forholdingy the. plates in the strainer over each poe-liet, menne Holi thestraniera upon the carrier, clamp having slotted lugs projecting theends thereof, bolts having angled fitted in holes in the rin'io thecarand positioned in the slots of said lugs, nuts ltted upon thothreaded ends of said bolts, as set forth.

.oositioned in each' 16. A nneurnatio filter-press comprising arotaryoarrier having a seriesof pockets about its oiromnferenoe, meansfor automatically filling said pockets as the carrier rotates, and meansfor subjecting the contents oi each pocket to the action of a vacuum andalso to the action oi air under pressure at diorent moments during therotary movement of the carrier, a Corrugated plate positioned in eachpocket, means for holdin'g the plates inthe pockets, n straineroverveaoh pocket, a series ol' clamps and means for holding said clampsupon the carrier, a bucket carried by each clamp, each bucket having anend which extendo` beyond the marginal edge of the bucket, as set forth.

l?, A pneumatic filter-press comprising o, rotary carrier having ncircumference made np ot a series of flat portions, each of which isrecessed forming a pocket, means for subjectingthe contents of eachpocket to the action of a vacuum :ind also to the action of air underpressure at different moments during the rotary movement of the carrier,a series of elanips having angled ends adapted to lit niger the marginaledges of the pockets, a corrugated plate mounted in each pocket, a.screen held h v said Clamps over each pocket, and means for antmiatieally fillingr the pook ets as the carrier .otates, as y et forth.

18. A pneumatic filter-press comprising a rotary carrier having acircumference made up of a series of llat portions, each of which isrecessed forming a pocket, means forsubjectintf the contents of eachpocket to the action ot' a vacuum and also to the notion of air underpressure at di'erent moments during the` rotary movement of the carrier,a series of clamps having angled ends adapted to fit over the marginaledges of the pockets, a Corrugated plate mounted in each pocket, ascreen held by said clamps over each pocket, a bucket formed integralwith each of said clamps and positioned along the marginal edge of eachpocket, as set forth.

in testimony whereof l hereunto aix my signature in the presence of twoWitnesses. EDWARD G. SHORTT. 1ivitnesses:

A. F. MILLS, J. T. JONES.

